$50 for one box of ammo??? I hope you got two for that, but even that is a bit high. My LGS (not quite real local but a LE supply) charges about $23 and I thought that was high.

Anyway, you may want to consider buying different varieties of ammo (if you can find it at a reasonable price) to confirm what works well and what may not. Although both my 1911's eat anything, I have a couple semi's that don't.